McIntosh C22CE User manual

MclntoshLaboratory,Inc.2ChambersStreet,Binghamton,NewYork13903Printed
CONTENTS
PerformanceSpecifications3
Notes3
RearPanel4
FrontPanelandTrimPartsList4
SectionLocations5-6
BlockDiagram5-6
InterconnectionDiagram6-9
Input/Output(LeftandRight)10-12
Amplifier11-14
ControlandBalanceControl14-18
Treble19
Bass20
SpeakerSwitch21
ACPowerSupply22
DCPowerSupply23
RepackingInstructions24

PerformanceSpecifications
FREQUENCYRESPONSE
+0,-0.5dBfrom20Hzto20,000Hz
RATEDOUTPUT
2.5VatMAINandSWITCHED1 and2,and
BALANCEDOUTPUTS
MAXIMUMVOLTAGEOUTPUT
Morethan8Vatalloutputs
TOTALHARMONICDISTORTION
0.002%maximumIHF,0.2%maximumfrom20Hz
to20,000Hzatratedoutput
SENSITIVITY
Phono:2.2mVfor2.5Vratedoutput,(0.45mVIHF)
HighLevel:250mVfor2.5Vratedoutput,(50mV
IHF)
SIGNAL-TO-NOISERATIO,A-WEIGHTED
Phono:80dBbelow10mVinput
HighLevel:90dBbelowratedoutput
VOLTAGEGAIN
PhonoToTape:41dBat1000Hz
PhonoToMain:61dBat1000Hz
HighLevelToTape:0dB
HighLevelToMain:20dB
INPUTIMPEDANCE
Phono:47Kohmsand65pFCapacitance
HighLevel:22Kohms
TONECONTROLS
BassandTreblestepped,20dBboostto20dBcut
ACPOWEROUTLETS
4switchedand1 unswitched,Totalcapacity1400
watts
POWERREQUIREMENTS
120V,50/60Hz,37watts
DIMENSIONS
FrontPanel: 16inches(40.6cm)wideby5-7/16
inches(13.8cm)high.Chassisdepthbehindmount-
ingpanel,includingclearanceforconnectors:14
inches(35.6cm).Knobclearancerequiredinfrontof
mountingpanel:1-1/2inches(3.8cm).
FINISH
Anodizedgoldandblackfrontpanel,chassisisblack.
WEIGHT
16pounds(7.3Kg)net,25pounds(11.4Kg)in
shippingcarton
Notes
1.Thefourtypesofheavylinesontheschematics
denotetheprimarysignalpathinthefollowing
manner:=LEFTCHANNEL
=RIGHTCHANNEL
=LEFTBALANCED
=RIGHTBALANCED
2.Unlessotherwisenoted,allvoltagesindicatedon
theschematicsaremeasuredunderthefollowing
conditions:
a.ACinputat120volts,50/60Hz.
b.Allvoltagesare±10%withrespectto
ground.A highimpedance(10megohm)
voltmetermustbeused.
3.Unlessotherwisespecified:
a.Resistorvaluesareinohms.
b.Capacitorvaluesareinmicrofarads(uF).
4.Thevoltagesenclosedina boxaresignalvoltages
thataremeasuredwitha 2.2mV,1kHzsignal
connectedtobothchannelsatthePHONO1
INPUTJACKS.
FRONTPANELCONTROLSaresetat:
BALANCECENTERDETENT
BASSandTREBLECENTERDETENT
INPUTSELECTORPHONO1
LOUDNESSNORMAL
MODESTEREO
POWERON
VOLUMECLOCKWISE
TAPEMONITOR1 and2 NORMAL
RUMBLEandHFFILTERSFLAT
SPEAKERS1&2
5.OnPCBoardDrawings,SquarePadIndicates:
a.PolarizedCapacitors- Positive
b.Diode- Cathode
c.Others- Pin1
6.WARNING:
Partsmarkedwiththesymbolhavecritical
characteristics.UseONLYreplacementparts
recommendedbythemanufacturer.
3

RearPanel
Fig.1 Rearview
FRONTPANELandTRIM
PARTSLIST
Symbol
016340
016334
018511
018512
018520
018521
C22-FrontPanel
090242
090243
090244
101035
104143
104144
Description
IndicatorGlass
FrontPanelGlass
TopPanelExtrusion
LowerPanelExtrusion
EndCapLeft
EndCapRight
FrontPanelCompleteW/Glass
Input/ModeKnob
Balance/VolumeKnob
Bass/Speaker/TrebleKnob
Screw,4-40x 5/16FillHead
FeltWasher3/4"Dia
FeltWasher5/8"Dia
4

5
6
BlockDiagram
SectionLocations
INTERCONNECTION
PARTSLIST
Symbol Part Description
CAPACITORS
C1.C2061276DISCCAP,.0047uF,
400VAC
JACKS
J2,J3 117563 PhoneJack
J4,J5117437XLRConnector,Male
LIGHTINGDEVICES
DS1.DS2058138LampFuseStyle
DS3.DS4058137LampDiscIndicator
SWITCHES
S1-S6148068SlideSwitch(SPDT)
TRANSFORMERS
T1159248PowerTransformer

InterconnectionDiagram
7
8
9

Input/Output,LeftandRight
AMPLIFIERPCB048474
12
10
11
LEFT INPUTS/OUTPUTS PCB 048481
AND
RIGHTINPUTS/OUTPUTSPCB048476
AMPLIFIER
PARTSLIST
Symbol Part
RELAYS
K1-K4087056
DIODES
D1.D2070102
TRANSISTORS
Q1132248
INPUT/OUTPUT
PARTSLIST
Symbol Part Description
RELAYS
K1,K7,K9,087056Form1C,5VDC,Reed,
K11,K12HE3321C0500
K2-K6.K8,087050SPST.5VDC,Reed,
K10,K13-K16HE3321A0400
Description
Form1C,5VDC,Reed,
HE3321C0500
Zener:51V,5%,400mW
NPN,300V,2SC3790DorE

NOTE:Componentsandvalues
tonedingraywarrantyour
attention;parenthesizedvalues
applytoserialnumbers
LK1001-LK1989.non-
parenthasizedvaluesapplyto
serialnumbersLK1990and
above.
Amplifier
14
13

ControlandBalanceControl
15 16

ControlandBalanceControl
BALANCECONTROL
PCB 048478
CONTROLPCB048479
BALANCECONTROL
PARTSLIST
Symbol Part Description
RESISTORSandPOTENTIOMETERS
R1134475BalanceControl
CONTROL
PARTSLIST
Symbol Part Description
DIODES
D1-D32070047SIG,75V,150mA,1N4148
INTEGRATEDCIRCUITS
IC1133189DualOp-Amp.MC33178P
IC21331085VRegulatorMC7805CT
RELAYS
K1-K3087050SPST,5VDC,Reed,
HE3321A0400
RESISTORS
R1134476VolumeControl
SWITCHES
S1146238InputSwitch
S2146239ModeSwitch
TRANSISTORS
Q1,Q2132224PNP,MPS4126
17
18

Treble
Bass
BASS
PARTSLIST
Symbol Part Description
SWITCHES
S1.S2146240Bass/TrebleSwitch
TREBLE
PARTSLIST
Symbol Part Description
SWITCHES
S4.S5146240Bass/TrebleSwitch
BASSPORTIONOF
PCB 048477
20
19
TREBLEPORTIONOF
PCB 048477

21
SPEAKERSWITCH
PORTIONOF
PCB 048477
SPEAKERSWITCH
PARTSLIST
Symbol Part Description
DIODES
D1-D6070047SIGDIODE1N4148
SWITCHES
S3146241SpeakerSwitch
SpeakerSwitch

WARNING:Partslocatedinthebelow
shadedareahavecriticalcharacteristics.
UseONLYreplacementpartsrecommended
bythemanufacturer.
ACPOWERSUPPLY
PORTIONOFPCB048471
ACPOWERSUPPLY
PARTSLIST
Symbol Part Description
CAPACITOR
C9061276DiscCap,.0047uF,400VAC
FUSES
F1089081Fuse1A,2AG
RELAYS
K1087054SPST,12VDC
22

DCPowerSupply
NOTE:Componentsandvalues
tonedingraywarrantyour
attention;parenthasizedvalues
applytoserialnumbers
LK1001-LK1989,non-
parenthasizedvaluesapplyto
serialnumbersLK1990and
above.
WARNING:Partslocatedinthebelow
shadedareahavecriticalcharacteristics.
UseONLYreplacementpartsrecommended
bythemanufacturer.
DCPOWERSUPPLY
PARTSLIST
Symbol Part Description
DIODES
D1.D2070044BRIDGE,400V,2A
23
DCPOWERSUPPLY
PORTIONOFPCB048471

RepackingInstructions
Intheeventitisnecessarytorepackthe
unitforshipment,theunitmustbepackedexactlyas
shownbelow.
IMPORTANT - The four plastic feet must
be attached to the bottom of the unit so they will
locate in the fourholes ofthe bottom pad. Failure to
do this will result in shipping damage.
Ifa shippingcartonoranyoftheinterior
partsisneeded,pleasecallorwritetheCustomer
ServiceDepartmentofMclntoshLaboratory.Order
partsfromtheaccompanyinglistbypartnumber.
Usetheoriginalshippingcartonandinterior
partsonlyiftheyareingoodserviceablecondition.
Qty.
1
2
1
1
1
4
4
4
1
PartNo.Description
033870Shippingcartononly
033884Cornerpad
033883Insidecartononly
033885Toppad
033886Bottompad
017156Plasticfoot
100160#10-32x 9/16"Screw
104080#10Flatwasher
033915Shippingcartoncomplete
withalltheaboveparts
INSIDE
CARTON
BOTTOMPAD
10-32x9/16"
SCREWWITH
WASHER(4)
BOTTOMCOVER
UNITWITH
(4)FEETON
TOPPAD
INSIDE
CARTON
CORNER
PAD
SHIPPING
CARTON
C22PREAMPLIFIER
PartNo.040354
BE032003
PrintedinU.S.A.
MclntoshLaboratory,Inc.,2 ChambersStreet,Binghamton,NY139O3
Telephone[phone]